Objectives: As early as 1976, the geothermal resources in Qamdo were investigated by the Chinese Academy, but the research degree was relatively low.Right now,except for some hot springs used as bath water, most of them are discharged into rivers unemployed ,which is a waste.The paper will allow us to better understand the geochemical properties and the temperature of geothermal reservoir in the study area. Methods: The hydrogeochemical characteristics of the hot springs water in the study area are analyzed by hydrochemical analyse, which provids a better understand for the hot springs.The height of hot spring recharge is determined by the stable isotope analysis of hydrogen and oxygen.Geothermometers and mixing model are used to calculate the temperature of reservoir. Results: Different from surface water and cold spring water, the hot spring water in the study area is of HCO3—Na type and rich in various trace elements such as Li，F，H2SiO3，HBO2 and so on.The recharge area is about 4725 m to 4802 m.The comprehensive analysis results and Na+—K+—Mg2+ ternary diagram indicate that the geothermal waters of the research area have not reach full equilibrium and mixed with cold waters. The comprehensive analysis of Na+—K+，K+— Mg2+，Na+—K+—Mg2+，quarts geothermometers，silica—enthalpy diagram and chloride—enthalpy diagram suggest the reservoir temperature is about 137℃.The depth of the thermal cycle is about 3801 m.